Open AccessStudy on intensity distribution inside the frequency conversion crystals for continuous phase plate front-located in inertialconfinement fusion driver
Author(s) -
Zhan Jiang-Hui,
Xin Cheng Yao,
Fuhua Gao,
Yang Ze-Jian,
Yixiao Zhang,
Guo Yong-Kang
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.014205
Subject(s) - optics , intensity (physics) , inertial confinement fusion , materials science , energy conversion efficiency , phase (matter) , frequency conversion , modulation (music) , crystal (programming language) , laser , light intensity , frequency modulation , phase modulation , intensity modulation , range (aeronautics) , optoelectronics , physics , acoustics , radio frequency , telecommunications , quantum mechanics , electrical engineering , computer science , phase noise , composite material , programming language , engineering
This paper studies the intensity distribution inside the frequency conversion crystals when the continuous phase plate (CPP) is placed in 1ω light of final optics assembly for inertial confinement fusion (ICF) driver. Our study shows that the modulation of 1ω light caused by CPP makes the frequency conversion efficiency and the uniformity of intensity field inside the frequency conversion crystals decrease. It leads to the possibility of laser induced damage for frequency conversion crystals to increase. What worth paying special attention to is: the modulation and maximum intensity in the vicinity of entrance and exit surface of frequency conversion crystal is much higher than in other areas, so the possibility of laser induced damage is also relatively greater there. However, if the intensity of 1ω light before the frequency conversion system becomes even greater, for the normal running of final optics assembly the modulation and maximum intensity inside the frequency conversion crystals should be confined within the permitted range.